Shell Programming and Scripting

[xgdfy3487]$pwd
/home/nick

[xgdfy3487] $ grep -l "xsgd1234dap" *.sh | wc -l
119

find . -name "*sh" |xargs perl -pi -e 's/find/replace/g'

grep -l "xsgd1234dap" *.sh  |xargs perl -i.bak -pe 's/xsgd1234dap/xsdr3423pap/g'

 
grep -l "xsgd1234dap" *.sh | while read filename
do
     cp $filename $filename.bk
     sed -i 's/xsgd1234dap/xsdr3423pap/g' $filename
done

for f in *.sh; do
    ed -s "$f" <<-'EOED'
        1,$s/xsgd1234dap/xsdr3423pap/g
        w
        q
    EOED
done

for f in *.sh; do
    printf %s\\n '1,$s/xsgd1234dap/xsdr3423pap/g' w q | ed -s "$f"
done